JP3167867U7 - - Google Patents

Description

  The present invention relates to an agricultural and horticultural sheet fastener. More specifically, when forming a cultivation space for agricultural or horticultural use such as a vinyl tunnel or a greenhouse that covers a resin sheet on the frame, the resin sheet that covers the column constituting the frame can be safely fixed to the column. The present invention relates to an agricultural and horticultural sheet fastening device that can lift up the resin sheet and hold the raised portion when the inside of the cultivation space is ventilated.

  For example, as shown in FIG. 33, a vinyl tunnel c1 or a vinyl house is formed by placing a resin sheet b such as a vinyl sheet on a tunnel-shaped frame a configured by arranging columns p, which are bent in an arch shape, at a predetermined interval. When the cultivation space c for agricultural and horticultural use is formed, the hem portion d of the resin sheet b is lifted up and the raised sheet portion e is held for the purpose of ventilating the cultivation space c. As an example of the agricultural and horticultural sheet fastening device f configured to be obtained, the configuration shown in FIGS. 34 to 35 as disclosed in Japanese Utility Model Laid-Open No. 63-158152 and Japanese Patent Laid-Open No. 1-343141 is disclosed. Things have been proposed.

  The entire sheet fastening device f is integrally formed of resin, and the inner ends j, j of the upper and lower fastening members g, h are bent in an arc shape so that the raised sheet portion e can be accommodated. It has the structure connected with the circular arc-shaped connection piece k which was made flexible. The upper and lower fastening members g, h have a flexible cylindrical gripping portion n having a C-shaped cross section having an opening m in the vertical direction, and the lower cylindrical gripping portion n1. A handle q for facilitating separation of the cylindrical gripping portion n from the support column p is provided at the outer end portion.

  And when fixing the said resin sheet b to the said support | pillar p using this sheet | seat fastening tool f, as shown to FIG. 33 and FIGS. 35-36, the support | pillar side part of the said support | pillar p bent in the arch shape is shown. In r, the column-side portion r wrapped with the resin sheet b is inserted into the internal cavities s, s of the upper and lower cylindrical holding portions n, n by forcibly elastically expanding the opening m. . As a result, the upper and lower cylindrical gripping portions n and n are fixed to the column side portion r, and thus the resin sheet b is fixed to the column p.

  When the inside of the cultivation space d is ventilated, the skirt portion d of the resin sheet b is lifted and the state is held by the sheet fastening device f. The operation procedure is as follows. That is, as shown in FIG. 37, the handle q is lifted by hand, the cylindrical holding portion n of the lower fastening member h is once removed from the column p, and the hem portion d of the resin sheet b is lifted up to The folded sheet portion e is accommodated in a housing space v formed between the arc-shaped connecting piece k and the column side portion r. Thereafter, the column-side portion r is fitted into the inner space s of the cylindrical gripping portion n, and the opening m is forcedly expanded elastically as shown in FIG. The holding part n is attached to the column side part r. Thereby, as shown in FIG. 33, the ventilation opening w can be formed in the side part of the vinyl tunnel c1.

  After the ventilation is completed, the handle q is raised in the same manner as shown in FIG. 37, and the cylindrical gripping portion n is removed from the column p. Thereafter, the raised sheet portion e is extended downward, and as shown in FIG. 36, the column side portion r is fitted into the internal space s of the cylindrical gripping portion n with the resin sheet b interposed therebetween. Thereby, the skirt part d is fixed to the support | pillar p again.

  When using the conventional agricultural and horticultural sheet fastener f having such a configuration, the resin sheet b can be fixed to the support p in this way, and when the inside of the cultivation space d needs to be ventilated, the ventilation port w There was an advantage that can be formed.

  However, when the cylindrical gripping portion n is fixed to the support column p with the resin sheet b interposed, or the lower cylindrical support portion n in a fixed state is removed from the support column p by pulling up the handle q. However, as described above, it is not always easy to cause the handle q to be removed from the column p. And while the attachment and detachment of the cylindrical holding part n with respect to the column p is repeated, there is a problem that the resin sheet b is easily damaged, such as being rubbed and broken. Occasionally, the resin sheet may be damaged by being attached and detached once.

Japanese Utility Model Publication No. 63-158152 JP-A-1-43141

  The present invention was developed in view of the above-mentioned conventional problems, and damages the resin sheet when forming a cultivation space for agricultural or horticultural use such as a vinyl tunnel or a plastic house with a resin sheet on the frame. The cylindrical holding part can be attached and detached easily and reliably, and when ventilating the cultivation space, the hem part of the resin sheet is raised and the raised sheet part is securely held in the accommodated state. An object of the present invention is to provide a sheet fastener for agricultural and horticultural use.

  An object of the present invention is to provide an agricultural and horticultural sheet fastening device having a function of stably supporting the raised sheet portion from below.

  The present invention is further advanced, and an object of the present invention is to provide an agricultural and horticultural sheet fastening device that can more easily and reliably open and close the cylindrical gripping portion.

In order to solve the above problems, the present invention employs the following means.
That sheet fastening device for agricultural and horticultural according to the present invention are both can be fixed resin sheet covering the struts to a frame to form a cultivating space horticultural a strut, tuck the skirt portion of the resin sheet An agricultural and horticultural sheet fastening device capable of holding a raised sheet portion in a raised state, wherein inner ends of a pair of upper and lower fastening members are bent in a rearward direction and have a recess. Each of the pair of upper and lower fastening members includes a cylindrical gripping portion that can elastically hold the support column with the resin sheet interposed therebetween, and the cylindrical gripping portion. The front end peripheral surface portion opens in an axial direction passing through the center of the cylindrical gripping portion, and has a cylindrical shape in which the opening can be expanded elastically, and both left and right sides of the opening portion of the cylindrical gripping portion in part, the tab toward the rear, are projected at a mutual interval, an inner both the tab Can elastically expanded the opening by picking the can, further, the protruding connecting piece is positioned within the width of the spacing of the root portion relative to the tubular clamping portion of the both the tab and, the An accommodating space formed between the concave portion of the projecting connecting piece and the support column in a state in which the upper and lower cylindrical support members grip the support column and projecting from the outer surface of the cylindrical support unit In addition, the raised sheet portion can be held in the accommodated state.

  In the agricultural and horticultural sheet fastening tool, the projecting connection piece is formed by bending a flat plate that is flat in the left-right direction into a semicircular arc projecting in the rear direction, and the end of the projecting connection piece is The cylindrical gripping portion is connected to the inner end of the cylindrical gripping portion so that the width direction matches the width direction between the two tabs of the cylindrical gripping portion, and both sides of the opening portion of the cylindrical gripping portion. It is preferable to form the edge on the inner end side of the side surface portion forming an inclined edge.

  In the agricultural and horticultural sheet fastening tool, the upper fastening member has an angle that protrudes obliquely upward in a direction away from the support column in a state where the cylindrical holding unit holds the support column at the upper end of both knobs. In the state where the cylindrical projecting piece is provided and the cylindrical gripping part grips the support column, the raised sheet portion is moved downward by a receiving part formed between the angular projecting piece and the support column. It is good to comprise so that it can be supported from. In this case, it is preferable that the angular projecting piece is formed in a quadrant arc shape having flexibility.

  Further, in each of the agricultural and horticultural sheet fasteners, the protruding connection piece is composed of two independent linear connection pieces bent in a protruding manner in the rear direction, and one linear connection piece. Both ends of the piece are connected to the inner end of either the left or right side pick piece positioned up and down, and the both ends of the other linear connecting piece are connected to the inner end of the other side pick piece located up or down. It is good to connect.

In the agricultural and horticultural sheet fastening device, the protruding connecting piece is formed in a state where both end portions are branched into two and the central portion in the length direction of the protruding connecting piece is a plate-like portion. It is good to form and to connect the front-end | tip part of a branch piece to each inner end of both the picking pieces of a pair of upper and lower fastening members. In this case, in the projecting connecting piece having the plate-like part, both end portions of the plate-like part are formed as concave curved edges inside the plate-like part, and the branch is formed at both ends of the curved edge. It is good to connect the base end of a piece.

The present invention has the following excellent effects.
(1) The seat fastening device according to the present invention has a cylindrical gripping portion capable of elastically gripping the support column, the front end peripheral surface portion of which opens in the axial direction passing through the center of the cylindrical gripping portion and is open. The part has a cylindrical shape that can expand elastically, and has a configuration in which knobs protrude from the left and right sides of the opening of the cylindrical gripping part toward the rear.
Therefore, according to the present invention, when fixing the resin sheet placed on the column that constitutes the frame forming the cultivation space for agricultural and horticultural use (such as a vinyl tunnel or a greenhouse), both the knobs are directed inward. By picking, the opening can be elastically expanded, and the support can be fitted into the internal space of the cylindrical gripping part through the opening through the resin sheet. Then, by returning both the knobs to the free state, the cylindrical holding portion firmly holds the support column, and therefore the resin sheet can be securely fixed to the support column by the upper and lower fastening members. And when removing the fastening member from the support column in order to form a ventilation opening in the cultivation space such as the vinyl tunnel, the left and right knobs are picked inwardly in the same manner as described above to elastically expand the opening. By doing so, the resin sheet and the column can be easily detached from the cylindrical gripping portion through the expanded opening.
Therefore, according to the present invention, it is possible to securely fix the resin sheet constituting the vinyl tunnel or the like to the support without damaging it, while forming a ventilation port in the vinyl tunnel or the like when necessary. Can open the opening easily and remove the resin sheet safely. Therefore, according to the present invention, unlike the case of using the conventional sheet fastening device, there is no problem that the resin sheet is damaged when the cylindrical holding member is removed.

(2) And since the seat fastening device according to the present invention employs a configuration in which the inner ends of the upper and lower fastening members are connected to each other by a flexible protruding connection piece bent in a rearward direction, Even when the column side portion is curved, the upper and lower cylindrical gripping portions can be securely fixed to the column without difficulty by deforming the protruding connecting piece. Further, the state in which the skirt portion of the resin sheet is rolled up can be reliably received and held in the holding space formed between the concave portion of the protruding connecting piece and the support column. As a result, a ventilation port can be reliably formed in the vinyl tunnel, and the ventilation port can be securely held.

(3) The protruding connecting piece is formed by bending a flat plate that is flat in the left-right direction into a semicircular arc that protrudes in the backward direction, and the end of the protruding connecting piece has a cylindrical shape in the width direction. The inner end of the cylindrical gripping part is connected to the inner end of the cylindrical gripping part so as to match the width direction between the two gripping pieces of the gripping part, and the inner end of the side surface part of the cylindrical gripping part that forms both sides of the opening When the side edge is formed as an inclined edge, it is possible to improve the operability of the opening expansion due to the projecting connecting piece being formed in a plate shape, and the opening width necessary for fitting the support is required. And it is easy to fit the column into the internal space without causing damage to the resin sheet.

(4) When providing a square-shaped protruding piece that protrudes obliquely upward at the upper ends of both the tabs of the upper fastening member, the raised sheet portion is a rectangular shape that is arranged at a required interval on the left and right. The receiving portion formed between the protruding piece and the support can be stably supported from below.
Therefore, when providing a ventilation opening in a vinyl tunnel, after removing the upper and lower fastening members, the upper and lower fastening members are attached to the support again, and the raised sheet portion is supported from below by the receiving portion. The tunnel ventilation opening can be secured larger or smaller, and the state can be maintained.
Further, in the case of such a configuration, the upper part is lifted so as to cover the sheet fastening device from the outside without removing the upper and lower fastening members and the upper part is supported by the receiving part. It is also possible to form a ventilation opening. In the case where the ventilation port is formed in this way, the operation of forming the ventilation port can be performed easily and efficiently.
When the rectangular projecting piece is formed into a flexible quadrant arc shape, when the raised sheet portion is supported by the receiving portion, the raised sheet portion is less likely to be damaged, and the supporting operation or Removal work can be facilitated.

(5) When the projecting connecting piece is configured with two independent linear connecting pieces bent in a rearward projecting manner and adopting a configuration in which both ends are connected to the inner end of the knob, The opening can be expanded without difficulty without the protruding connecting piece becoming an obstacle.

(6) When adopting a configuration in which both end portions of the protruding connection piece are bifurcated and the ends of each branching piece are connected to the inner ends of both knobs, the protruding connection piece While the required notation such as the lot number can be clearly given to the plate-like portion forming the intermediate portion of the above-mentioned, the opening can be expanded without causing the projecting connecting piece to become an obstacle.
In this case, when the both end portions of the plate-like portion are configured as concave curved edges inward of the plate-like portion, the opening can be more smoothly expanded.

It is a perspective view which shows the sheet | seat fastening tool concerning this invention in the use condition which fixed the resin sheet which covered the support | pillar which comprises a vinyl tunnel to this support | pillar. It is a perspective view which shows the state which formed the ventilation port by raising the skirt part of a resin sheet, and hold | maintaining the raised sheet part with a fastening tool. It is a perspective view which expands and shows the fixed state of the resin sheet by a sheet | seat fastening tool, and the holding state of the raised sheet part. It is sectional drawing which shows the state which fixed the resin sheet which comprises a vinyl tunnel to the support | pillar. It is a perspective view which shows a sheet | seat fastening tool with a support | pillar. It is a perspective view which shows a sheet | seat fastening tool. FIG. It is sectional drawing explaining the operation | work process which fixes a resin sheet to a support | pillar with a sheet | seat fastening tool. It is sectional drawing explaining the operation | work process which accommodates the raised sheet part in an accommodation space part. It is a perspective view which shows the state which supported the rolled-up sheet | seat part with the receiving part of the sheet | seat fastening tool, and formed the ventilation port in the vinyl tunnel. It is an expansion perspective view which shows the state which supported the raising sheet | seat part in the receiving part. FIG. It is a perspective view which shows the other aspect which forms a ventilation port in a vinyl tunnel by supporting a raised sheet part in a receiving part. It is an expansion perspective view which shows the state which supported the raising sheet | seat part with the receiving part. FIG. It is explanatory drawing explaining the operation | work process which inserts a support | pillar to a cylindrical holding part through a resin sheet. It is explanatory drawing explaining the other work process which inserts a support | pillar in a cylindrical holding part through a resin sheet. It is a perspective view which shows the state which formed the ventilation port in the vinyl tunnel by combining the state which accommodated the raised sheet part in the accommodation space part, and the state which supported it with the receiving part. It is a perspective view which shows the other state which formed the ventilation port in the vinyl tunnel by combining the state which accommodated the raising sheet part in the accommodation space part, and the state which supported it in the receiving part. It is a perspective view which shows the other Example of a sheet | seat fastening tool. It is a perspective view which shows the other Example of a sheet | seat fastening tool. It is a perspective view which shows the state which accommodated the rolled-up sheet | seat part in the accommodation space part using the sheet | seat fastening tool shown in FIG. It is a perspective view which shows the state which accommodated the rolled-up sheet | seat part in the accommodation space part using the sheet | seat fastening tool shown in FIG. It is a perspective view which shows the state which supported the rolled-up sheet | seat part with the receiving part using the sheet | seat fastening tool shown in FIG. FIG. 22 is a perspective view illustrating a state in which a rolled-up sheet portion is supported by a receiving unit using the sheet fastening tool illustrated in FIG. 21. It is a perspective view which shows the sheet | seat fastening tool which does not have a square-shaped protrusion piece in the use condition. It is sectional drawing which shows the sheet | seat fastening tool which protrudes in the back and straight parallel state in the left and right picking pieces. It is a perspective view which shows the sheet | seat fastening tool which connects a fastening member with the protruding connection piece in which the front-end | tip part was formed so that bending was possible. It is sectional drawing which shows the use condition. It is a perspective view which shows the sheet | seat fastening tool formed by connecting fastening members mutually by one protrusion-shaped connection piece formed in linear form. It is a side view which shows the other aspect of the inclined edge formed in a cylindrical holding part. It is a side view which shows the other aspect of the inclined edge formed in a cylindrical holding part. It is a perspective view which shows the state which hold | maintained the raising sheet | seat part of the vinyl tunnel using the conventional sheet | seat fastening tool, and formed the ventilation port. It is a perspective view which shows the conventional sheet | seat fastening tool. It is an expansion perspective view which shows the state which hold | raised and raised the sheet | seat part using the sheet | seat fastening tool. It is sectional drawing which shows the state which held up the raising sheet | seat part using the sheet | seat fastening tool. It is sectional drawing explaining the operation | work process which hold | maintains the raising sheet part using the sheet | seat fastening tool. It is sectional drawing which makes the state which attached the sheet | seat fastening tool directly to the support | pillar.

  1-4, an agricultural and horticultural sheet fastening tool (hereinafter referred to as a sheet fastening tool) 1 according to the present invention forms a cultivation space 5 as a vinyl tunnel 5a, for example, by covering a frame 2 with a resin sheet 3. At this time, the resin sheet 3 such as a vinyl sheet placed on an arch-shaped support column 6 constituting the tunnel-shaped frame 2a can be fixed to the support column 6, and as shown in FIGS. The raised sheet portion 9 can be held in the accommodated state with the skirt portion 7 being raised, and the inner ends 12 and 13 of the pair of upper and lower fastening members 10 and 11 are projecting connecting pieces 15. Concatenated.

  5 to 6 show the sheet fastener 1 in an enlarged manner. The upper and lower fastening members 10 and 11 are integrally molded products made of, for example, polyethylene as a whole. As shown in FIGS. 5 to 7 and FIG. 8C, the support 6 is interposed with the resin sheet 3 interposed therebetween. A cylindrical gripping portion 16 that can be elastically gripped is provided, and the cylindrical gripping portion 16 has an opening with a front end peripheral surface opening in an axial direction passing through the center of the cylindrical gripping portion 16 as shown in FIGS. The portion 17 has a cylindrical shape (cylindrical shape in the present embodiment) that can expand elastically, and has a C-shaped cross section. The side edges 19, 19 (FIG. 7) of the opening 17 are formed in an arc shape, and the opening width L1 of the opening 17 is larger than the inner diameter L2 of the cylindrical gripping portion 16 as shown in FIG. It is formed small. In the present embodiment, the length of the cylindrical gripping portion 16 is set to about 40 mm, and the inner diameter L2 thereof is set to about 7.5 mm so as to correspond to a support column having a diameter of 8 mm, for example. The width L1 of the opening 17 is set to about 3 mm.

  As shown in FIGS. 5 to 7, knobs 21 and 21 are projected from the outer surfaces of the opposite left and right side portions 20 and 20 (FIG. 7) of the cylindrical gripping portion 16. The left and right knobs 21, 21 are formed in a projecting shape with a C shape in which the width between the two is enlarged rearward, and the non-slip protrusion 23 is formed on the outer surface 22 of the knobs 21, 21. Are arranged side by side. In this embodiment, the knobs 21 and 21 have a front portion 25 provided over the entire length of the cylindrical gripping portion 16 and a rear portion 26 protruding rearward at a central portion of the rear portion of the front portion 25. It is provided as it is.

  By picking both the knobs 21 and 21 inward, the opening 17 can be expanded against the elasticity of the cylindrical gripping part 16 as shown in FIG. As shown in FIG. 8 (B), the support column 6 can be inserted into the internal space 27 of the cylindrical gripping portion 16 without difficulty while being covered with the resin sheet 3.

  In this embodiment, the inner ends 12 and 13 of the upper and lower fastening members 10 and 11 having such a structure are connected to the left and right sides of the cylindrical gripping portion 16 as shown in FIGS. A portion 29 between the knobs 21 and 21 is connected by the protruding connection piece 15 which is bent in a semicircular arc shape protruding rearward and has a front recess 30. As shown in FIGS. 9 (B), 4 and 3 (A), the size of the projecting connecting piece 15 is such that when the upper and lower cylindrical gripping portions 16 and 16 grip the column 6, Between the concave portion 30 of the projecting connection piece 15 and the support column 6, it is set so that an accommodation space portion 31 capable of accommodating the raised sheet portion 9 can be formed. The radius of the connecting piece 15 is set to about 15 mm, and the thickness thereof is set to about 2 mm.

  In the present embodiment, as shown in FIGS. 5 to 6, the upper ends of the left and right knobs 21, 21 of the upper fastening member 10 (the upper ends of the front portions 25, 25 in the present embodiment) 32, 32. In addition, there are provided angular projecting pieces 33, 33 projecting obliquely upward in a direction away from the column 6 in a state where the cylindrical clamping unit 16 holds the column 6. In the present embodiment, the rectangular projecting pieces 33, 33 are formed by bending a round wire having a circular cross section into a quadrant arc, and the leading ends 35, 35 are raised sheets. In order to prevent the portion 9 from being caught, it is formed in a spherical shape. Then, in the state where the cylindrical gripping portion 16 grips the support column 6, as shown in FIGS. 10 to 12 and FIGS. 13 to 15, the raised sheet portion 9 is replaced with the angular projecting piece 33 and the support column 6. Can be supported from below by a receiving portion 36 having an arc shape formed between the two.

  In this embodiment, the projecting connection piece 15 is formed by bending a flat plate in the left-right direction into a semicircular arc projecting in the rear direction, and the end portions 37, 37 of the projecting connection piece 15 are formed. 5-6, the width direction is made to correspond to the width direction between both the tabs 21 and 21 of the said cylindrical holding part 16, and it connects with the inner ends 12 and 13 of this cylindrical holding part 16. As shown in FIG. ing. The protruding connection piece 15 is formed by bending a flat plate in this way, so that the bent form can be easily maintained, and a lot number or the like is clearly marked on the surface 39 of the protruding connection piece 15. This is to increase the lateral width of the surface 39 as much as possible.

  Therefore, when the opening 17 is widened by pinching both the tabs 21 and 21 inward, the inner end portions 40 and 40 (FIGS. 5 to 6) between the tabs 21 and 21 are removed. The rigidity is increased, and the opening 17 is difficult to open on the inner end portions 40, 40 side. Therefore, in this embodiment, as shown in FIGS. 6 and 16, the side surface portions 41, 41 forming both sides of the opening 17 of the cylindrical gripping portion 16 are directed inward on the inner end (connecting portion) 13 side. Thus, for example, as the shape cut out in a relatively large arc shape, the inner end side edge of the side surface portion is formed as inclined edges (projected arc-shaped edges in this embodiment) 42, 42. In FIG. 17 shown for comparison, the inner end edge 45 of the side surface portion 41 of the cylindrical gripping portion 16 is perpendicular to the axial direction of the cylindrical gripping portion 16 when such a cutout portion is not provided. Presents. By cutting in this way, as shown in FIGS. 16 (A) and 16 (C), the column 6 can be fitted into the internal space 27 of the cylindrical gripping portion 16 with the resin sheet 3 interposed therebetween. It becomes like this. In this embodiment, when the support 6 is inserted into the internal space 27 with the resin sheet 3 interposed, the support 6 is inserted into the internal space 27 without damaging the resin sheet 3. In order to smoothen, the outer end edges 46, 46 of the side surface portions 41, 41 on both sides of the opening 17 are formed in a slightly arc shape.

  As a result, a state in which the width L3 of the opening 17a is relatively large is obtained also on the connecting portion 13 side of the protruding connecting piece 15. As shown in FIG. 17, if such a cut-out portion is not provided, as shown in FIG. 17B, the opening width L4 of the opening portion 17 is the connecting portion 13 side (inner end side portion). 47, and on the connecting portion 13 side, as shown by an arrow in FIG. 17 (A), the column portion 6a must be pressed into the inner space 27, so that the cylindrical holding This is not preferable because it is difficult to smoothly insert the support 6 into the internal space 27 of the portion 16.

  FIG. 1 shows an example of use of a sheet fastener 1 having the above-described configuration, and a resin sheet 3 covered on a column 6 constituting a tunnel-like frame 2a when forming the vinyl tunnel 5a for agriculture and horticulture. The case where is fixed to the column 6 is shown.

  The tunnel-like frame 2a is configured by juxtaposing the pillars 6 opened at the lower ends and bent in a U-shape in one direction at a required interval (for example, an interval of about 70 cm). As shown in FIGS. 1 and 4, both lower end portions 49, 49 are pierced into the ground 50 and are erected. After covering the tunnel-like frame 2a having such a structure with, for example, a resin sheet 3 as a vinyl sheet, the hem portions 7 and 7 on both sides of the resin sheet 3 are buried in the ground. When the resin sheet 3 is fixed to the column 6 in this state, the sheet fastening tool 1 is used.

  The fixing procedure is performed by fixing the upper and lower cylindrical gripping portions 16 to the support column 6 with the resin sheet 3 interposed therebetween. At this time, the left and right knobs 21 and 21 are moved as shown in FIG. ), The opening 17 is elastically expanded by picking it inward with a finger. In this expansion, the rear side portions 26 and 26 constituting the left and right knobs 21 and 21 are provided in the central portion in the longitudinal direction of the cylindrical gripping portion 16 as shown in FIGS. Therefore, the force at the time of picking both the tabs 21 and 21 inward can be applied substantially uniformly in the longitudinal direction of the cylindrical gripping portion 16, and the opening 17 can be expanded without difficulty. It becomes.

  Thereafter, as shown in FIG. 8B, the column side portion 24 of the column 6 is fitted into the internal space 27 of the cylindrical gripping portion 16 so that the resin sheet 3 is wrapped around the column 6. Since the opening 17 can be greatly expanded by pinching both the tabs 21 and 21 inward (since the inclined edge 42 is provided, the inner end (connecting portion) 13 as shown in FIG. 16). The opening 17 is also expanded to the required width on the side), and the support 6 can be easily and reliably fitted into the internal space 27 formed thereby without damaging the resin sheet 3. .

  Thereafter, when the fingers are released from both the tabs 21 and 21, as shown in FIG. 8C, the cylindrical gripping portion 16 returns to the initial state by its elastic action. As a result, the cylindrical gripping portion 16 grips the support column 6, and as a result, as shown in FIG. 8C, the resin sheet 3 is fixed to the support column 6 by the upper and lower cylindrical gripping portions 16 and 16. Will be. For example, as shown by L5 in FIG. 4, the lower fastening member 11 is fixed to the support column 6 with its lower end 51 positioned approximately 15 cm above the ground.

  In this way, when the upper and lower cylindrical gripping portions 16 and 16 are attached to the column 6, the protruding connection can be achieved even when the seat fastening attachment portion (column side portion) 24 of the column 6 is curved. By deforming the piece 15 so that the shape of the semicircular arc extends, the upper and lower cylindrical gripping portions 16 and 16 can be attached to the column without difficulty by following the curved state of the column side portion 24.

  When the inside of the vinyl tunnel 5a is ventilated, the lower fastening member 11 is placed at the portion where the ventilation port 53 is formed, with the tabs 21 and 21 facing inward as shown in FIG. The opening 17 is elastically expanded by picking up (an expanded state similar to that shown in FIG. 8B), and the lower seat fastener 11 is removed from the column 6. Thereafter, the skirt portion of the resin sheet 3 (for example, a skirt portion having a width of about 15 cm on the ground and a width portion of about 15 cm embedded in the ground) 7 is rolled up, As shown in FIG. 9 (A), the left and right knobs 21 and 21 of the lower fastening member 11 are again turned inward while being accommodated in the semicircular arc-shaped recess 30 formed by the protruding connecting piece 15. Then, the opening 17 is elastically expanded (the same expanded state as shown in FIG. 8A), and the column 6 is fitted into the internal space 27 of the cylindrical gripping portion 16. At this time, since the protruding connection piece 15 is configured in an arch shape and can be easily deformed, the lower fastening member 11 removed from the support column 6 by the deformation of the protruding connection piece 15 is shown in FIG. As shown to (A), it can be bent outward, Therefore The operation | work which accommodates the raised sheet part 9 in the recessed part 30 can be made easy. Then, if both the knobs 21 and 21 are brought into a free state, the lower fastening member 11 is fixed to the column 6 as shown in FIG. In this state, the raised sheet portion 9 is accommodated in the accommodating space portion 31 formed between the projecting connecting piece 15 and the support column 6, and the state where the hem portion is raised is obtained. Retained. In this state, as shown in FIG. 2, the ventilation hole 53 is formed in the vinyl tunnel 5a and the inside of the vinyl tunnel 5a can be ventilated.

  When this ventilation is finished, the lower fastening member 11 is removed from the support 6 by picking both the tabs 21 and 21 inward in the same manner as described above, and the same as in the state shown in FIG. Then, the raised sheet portion 9 is taken out from the accommodating space 31 and lowered. Thereafter, as shown in FIGS. 1 and 4, since it is necessary to seal the inside of the vinyl tunnel 5a so that cold does not enter, the lower end portion 55 (FIG. 4) of the resin sheet is covered with soil and the lower end portion 55 is covered. To prevent the wind from drowning.

  10 to 12 show a state in which the raised sheet portion 9 is supported by the receiving portion 36 formed between the angular projecting piece 33 and the column 6 by using the sheet fastening device 1. Is. Thus, in order to support by the receiving part 36, after removing the upper and lower fastening members 10 and 11 from the support | pillar 6 once, the skirt | bottom part 7 of the resin sheet 3 is lifted up, and then the upper and lower fastening members 10 and 11 11 is again fixed to the column 6 at substantially the same position as the initial position, and in this state, the raised sheet portion 9 is supported by the receiving portion 36 from below. In this way, the skirt portion of the resin sheet 3 is raised to the upper side, and the raised sheet portion 9 can be supported by the receiving portion 36 in this state, and the raised sheet portion 9 is accommodated in the accommodation space portion 31. Compared with the case where it maintains in a state, there exists an advantage which can ensure the ventilation port 53 of the vinyl tunnel 5a larger (contrast FIG. 2 and FIG. 10). Alternatively, the upper and lower fastening members 10 and 11 can be fixed to the support column 6 by placing them under the saddle from the beginning, and when this is done, the ventilation port 53 of the vinyl tunnel 5a can be set smaller. As described above, when the upper and lower fastening members 10 and 11 are once removed from the support 6 and then fixed to the support 6 again, there is an advantage that the size of the ventilation port 53 can be adjusted as necessary.

  FIGS. 13 to 15 show other modes in which the raised sheet portion 9 is supported by the receiving portion 36 formed between the square-shaped protruding piece 33 and the column 6 by using the sheet fastening device 1. It is shown. In order to support by the receiving portion 36 in this way, as shown in FIG. 15, the upper and lower fastening members 10 and 11 remain fixed to the support column 6 with the resin sheet 3 interposed therebetween. The skirt portion 7 of the resin sheet 3 is lifted up so as to cover the fastening device 1 from the outside, and the upper end side portion 56 is put into the receiving portion 36, and the upper end side portion 56 is inserted into the receiving portion 36. The part 36 is supported from below. Thus, when the raised sheet portion 9 is supported by the receiving portion 36, there is an advantage that the ventilation port 53 can be formed in the vinyl tunnel 5a with high work efficiency without removing the lower fastening member 11. The support of the raised seat portion 9 using the receiving portion 36 is supported by the raised seat portion 9 in the case of no wind or light wind, or in the case of temporary ventilation such as ventilation for a short time. This is effective when there is no risk of detachment from the portion 36.

  And the said square-shaped protrusions 33 and 33 are protrudingly provided by the inner ends 12 and 13 (FIGS. 5-6) between the knobs 21, 21, 21, and 21 in the cylindrical gripping part 16. Instead, as shown in FIGS. 5 to 6, they are connected to the upper ends 32, 32 of both knobs 21, 21. Thus, since this square protrusion piece 33 and this knob piece 21 are integrated, when expanding the said opening part 17 by pinching both the knob pieces 21 and 21, it is this cylindrical shape. The expansion of the gripping part 16 is not hindered.

  18 and 19 show a state in which the ventilation port 53 of the vinyl tunnel 5a is formed by combining the state in which the raised sheet portion 9 is accommodated in the accommodation space portion 31 and the state in which it is supported by the receiving portion 36. Is. 18 shows a case where the accommodation in the accommodation space portion 31 and the support by the receiving portion 36 are alternately performed, and FIG. 19 shows some cases where the support by the receiving portion 36 is supported. The case where it is surely accommodated and held in the accommodation space 31 after continuing is shown. When the two types are combined in this way, the work for forming the ventilation port 53 can be performed by reliably holding the raised sheet portion 9 in the accommodation space 31, but in the middle, The raised sheet portion 9 can be easily supported by the receiving portion 36 without removing the attachment member 11, and the work of forming the ventilation port 53 of the vinyl tunnel 5a can be performed efficiently and reliably.

  FIG. 20 (A) shows another embodiment of the seat fastening device 1, and both end portions 59, 59 of the protruding connection piece 15 are bifurcated and the length of the protruding connection piece 15 is long. A central portion in the vertical direction is formed as a plate-like portion 44, and the tip portions 61, 61 of the respective branch pieces 60, 60 are respectively connected to the two knob pieces 21, 21 of the pair of upper and lower fastening members 10, 11. It is connected to the inner ends 62, 62 of the front portions 25, 25. Further, both end portions of the plate-like portion 44 are formed as concave curved edges 48, 48 inside the plate-like portion 44, and the branch pieces 60, 54 are formed at both ends 54, 54 of the curved edge 48. The base ends 58 and 58 of 60 are connected. When configured in this way, even if the central portion of the projecting connecting piece 15 is formed as a plate-like portion 44, the opening 17 can be moved when the knobs 21 and 21 are picked inward. The inner end side portion can be expanded relatively well. A lot number or the like can be clearly displayed on the surface 65 of the plate-like portion 44. As shown in FIG. 20B, both end edges 64 of the plate-like portion 44 are formed as long as the opening 17 can be expanded without difficulty when the knobs 21 and 21 are picked inward. Alternatively, it may be configured so as to present a straight line in the width direction of the protruding connection piece 15 without being bent.

  FIG. 21 shows a seat fastening device 1 in which the protruding connecting piece 15 is configured by two independent linear connecting pieces 66 and 67 which are bent in a protruding manner in an arc shape in the rearward direction. Both ends 69 and 70 of one linear connecting piece 66 are connected to the inner ends 71 and 71 of the front side portions 25 and 25 of the left and right knobs 21a positioned on the upper and lower sides, and the other Both ends 73 and 75 of the linear connecting piece 67 are connected to the inner ends 79 and 79 of the front side portions 25 and 25 of the other side knob piece 21b positioned above and below.

  When configured in this way, both ends 69, 70, 73, 75 of the projecting connecting piece 15 do not hinder the expansion of the cylindrical gripping part 16 as described above, and both the tabs 21, 21 are provided. When the opening 17 is elastically expanded by pinching inwardly, the expanded width of the opening 17 can be formed substantially uniformly. Therefore, in the sheet fastener 1 shown in FIGS. 20 and 21, the cylindrical gripping portion 16 is not provided with the inclined edge as described above.

  22 and 23 show the resin sheet 3 in the accommodating space 31 formed between the protruding connecting piece 15 and the support 6 in a state where the upper and lower cylindrical support parts 16, 16 hold the support 6. 2 shows a state in which the raised sheet portion 9 of the hem portion 7 is accommodated. FIG. 24 and FIG. 25 show a state where the raised sheet portion 9 is supported by the receiving portion 36 from below.

The present invention is by no means limited to that shown in the above-described embodiments, and it is needless to say that various design changes can be made within the description of “the scope of claims for utility model registration”. One example is as follows.
(1) FIG. 26 shows the sheet fastening device 1 that does not include the above-described angular protruding piece 33.

(2) As shown in FIG. 27, the left and right knobs 21 and 21 have the left and right knobs 21 and 21 as long as the opening 17 can be expanded as required by pinching the left and right knobs 21 and 21. May be projected rearward in a linearly parallel state. When comprised in this way, when many sheet fastening devices 1 are packed together, a packing operation becomes easy.

(3) FIG. 28 shows another embodiment of the seat fastening device 1 according to the present invention, in which the projecting connecting piece 15 having flexibility is not the arch shape as described above, but the tip portion. Is formed in a triangular shape formed as a hinge portion 80 that can be bent. Even in such a configuration, the lower fastening member 11 removed from the column 6 can be removed by the ease of deformation by the hinge portion 80 of the projecting connecting piece 15 as shown by a one-dot chain line in FIG. Therefore, the work of accommodating the raised sheet portion 9 in the accommodation space can be facilitated.

(4) The cylindrical gripping portion 16 is not necessarily specified as a cylindrical shape as long as the opening portion 17 exhibits a cylindrical shape that can be expanded elastically.

(5) The rectangular protruding piece 33 protrudes upward in a straight line shape or a broken line shape so long as a receiving portion 36 that can support the raised sheet portion 9 from below is formed between the square protruding piece 33. It may be configured.

(6) FIG. 30 shows another embodiment of the seat fastening device 1 according to the present invention. In order to facilitate the opening of the opening 17 of the cylindrical gripping portion 16, the protruding shape is shown. The connecting piece 15 is formed in a straight line (for example, a round line shape), and its end portions 81 and 81 are located between the left and right knob pieces 21 and 21 of the cylindrical holding portion 16 and the inner end of the cylindrical holding portion. The ends 12 and 13 are connected.

(7) The struts 6 can have various diameters such as 5 mm, 8 mm, 11 mm, and 13 mm, and the inner diameter of the cylindrical gripping portion 16 is adjusted to the diameter through the opening 17. The support 6 can be fitted into the internal space 27 of the cylindrical gripping portion 16 with the resin sheet 3 interposed therebetween, so that the resin sheet 3 can be fixed to the support 6.

(8) The inclined edge 42 may be configured as an inclined linear edge as shown in FIGS. 31 and 32 in addition to the arcuate edge of the protrusion.

(9) The seat fastening device 1 according to the present invention can be applied to form a general cultivation space such as a greenhouse in addition to the above-described vinyl tunnel, and the column 6 is erected in a vertical state. Also included.

DESCRIPTION OF SYMBOLS 1 Sheet fixing tool 2 Frame 3 Resin sheet 5 Cultivation space 6 Strut 7 Resin sheet hem part 9 Lifting sheet part 10 Fastening member 11 Fastening member 12 Inner end 13 Inner end 15 Protruding connecting piece 16 Cylindrical gripping part 17 Opening portion 21 Picking piece 27 Internal space 30 Recess 31 Receiving space 32 Upper end of the picking piece 33 Square protruding piece 36 Receiving portion 37 End portion of protruding connecting piece 42 Inclined edge 53 Ventilation port 60 Branching piece 67 Linear Connecting piece

Claims (7)

Agricultural and horticultural use that can fix a resin sheet placed on a support that constitutes a frame that forms a cultivation space for agricultural and horticultural use, and can hold the raised sheet part in a state where the hem part of the resin sheet is raised. The inner ends of the pair of upper and lower fastening members are connected to each other by a flexible projecting connection piece that is bent in a rearward direction and has a concave portion. Each of the fastening members includes a cylindrical gripping portion that can elastically grip the support column with the resin sheet interposed therebetween, and the cylindrical gripping portion has a front end peripheral surface portion at the center of the cylindrical gripping portion. A cylindrical shape that opens in the axial direction passing through the opening and the opening can elastically expand, and the left and right sides of the opening of the cylindrical gripping portion are spaced apart from each other toward the rear. apart it is projected, elastically expanding the opening by pinching both the tab inwardly It can further the projecting connecting piece is positioned within the width of the spacing of the root portion relative to the tubular clamping portion of the both the tab and are protruded from the outer surface of the tubular clamping portion, and The raised sheet portion can be held in the accommodated state in the accommodation space formed between the concave portion of the projecting connecting piece and the support in a state where the upper and lower cylindrical gripping parts hold the support. An agricultural and horticultural sheet fastening device characterized by being made.   The protruding connecting piece is formed by bending a flat plate that is flat in the left-right direction into a semicircular arc that protrudes backward, and the end of the protruding connecting piece has a width direction in the cylindrical gripping portion. Are connected to the inner end of the cylindrical gripping portion so as to coincide with the width direction between the two gripping pieces, and the inner end side edge of the side surface portion that forms both sides of the opening of the cylindrical gripping portion. 2. The agricultural and horticultural sheet fastener according to claim 1, wherein the fastener is formed as an inclined edge.   The upper fastening member is provided with an angular projecting piece projecting obliquely upward in a direction away from the support column in a state in which the cylindrical support unit holds the support column at the upper end of both knobs. 2. The folded sheet portion can be held in a state of being supported from below by a receiving portion formed between the square projecting piece and the support column in a state in which the portion holds the support column. Or the sheet | seat fastener for agricultural and horticultural use of 2.   4. The agricultural and horticultural sheet fastening tool according to claim 3, wherein the square protruding piece is formed in a quadrant arc shape having flexibility.   The protruding connecting piece is composed of two independent linear connecting pieces bent in a protruding manner in the rearward direction, and both ends of one linear connecting piece are positioned on either the left or right side. 2 or 2, wherein both ends of the other linear connecting piece are connected to the inner ends of the other side picking pieces positioned above and below. 3. A sheet fastener for agricultural and horticultural use according to 3.   The protruding connecting piece is formed in a state where both end portions are bifurcated, and a central portion in the length direction of the protruding connecting piece is formed as a plate-like portion, and a tip end portion of the branching piece is a pair of upper and lower portions. 4. The agricultural and horticultural sheet fastening device according to claim 1, wherein the fastening member is connected to the inner ends of both of the tabs of the fastening member.   Both end portions of the plate-like part are formed as concave curved edges inside the plate-like part, and the base ends of the branch pieces are connected to both ends of the curved edge. An agricultural and horticultural sheet fastener according to claim 6.